Fastener-inserting machine



` March 27, 1928. 1,663,593

H. R. HAMILTON FASTENER INSERTING MACHINE f Filed Ju1y .2o. v1926 ggf WVU/70H'.

zd @v Patented Mar. 27, 1928.

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PATENT GFFiCE,

Y J HUGH R, HAMILTON, Ofi?vr WEBSTER, MASSACHUSETTSyKASVSIGNOR TO UNITED SHOE .MACHINERY-COEPORAT1ON`, 0E rAyTERsoN, vNEW JERSEY, A. coEEoRATVIoI/LOF NEW. JERSEY.

JaAisTEivER-INsien'niim` MACHINE.

Application 111ed'Iu1y'20, 1926; SeriaiNo. 1233788.

This invention relates to fastener-insert ing machines andxisillustrated asembodied in an eyeleting machine adaptedfor use in the manufacture of boot and shoes.

5 In the manufacture of boots and shoes it is common p'ractice to use eyeleting machines having a single tool, comprising'aftubular punch formed with 'a cleiichingwsurface,

which acts as a combined punching andsetf tingtool, first punching a hole through-the work which is positioned for that purpose upon a suitable punch block, and then feedingk the work to eyelet-insertingj position where an eyeletis introduced by a tool havling a spindle which picks the eyeletffrom the end of a raceway, transfers it to inserting position and forces it against a clenching surface formed upon the kcoinbinedj punching and setting tool` thereby 2(1 clenching` the eyelet in the work. In the operationk of such a machine, the spindle of the set vwhich picksk the eyelet from the raceway and'introduces-it into the hole, punched in the work by the combined punching'and setting tool tends to force theV chips punched from the work into the hollow interior of the tubular punch, the chips passingoff,V for example, through an outlet in* the side of the punch. At times, however7 there is an objectionable tendency7 for the chips to stick in thepunch, and this has been particularly A troublesome in the case of the setting ofsocalled oval eyeletshthat isy eyelets thefcrosssection of thek barrel of which elongated 35, so thatthe area of conta'ctbetween the edges offthe chips and the inside ofthe punch'is large relatively tothe surface area of the chips and friction iscorrespondingly high.

Itis an object ofthe present'invention to 40 provide an improved'eyeleting,machine organization having ejectingmeans arrangedtofQrCefrOmthe punch the chips punched from the work. In the illustrated machine anejector is :housedwithin the punch bar which carries at its lower end the. combined 'tubulary punchingand setting tool' and isV normally heldiretracted so thatkit has no substantial engagement with they work during the punching-operation.. Means, how- 50. ever, is provided for thrusting. the ejector forcibly forward relatively tothe punching A and setting tool at afperiod in the cycle of operation ofthe mach'ine'aft'er `the completionofthe punching operation so as to eject p the chip from the punch.

theabove andother objects and 'features inview theinvention will now be de` scribed in connectionwvith the accompanying-drawings and pointedlout inthe claims. In the drawings, l' ,l Fig. 1 is aaperspective view of a portion of the front of an eyelet-inserting machine embodying the present invention; i

Fig. 2 is -a verticalsection through the mechanism ofEig.- 1; f Fig 3 is a perspective view and'Figqlris aside elevation vofa detail of the upper end of the punch bargof the machiney with the end ofthe 'ejector projectingtherefrom.

The invention isv-disclosedherein as ein` bodied in anveyeleting machine of the type disclosed in United States Letters Patent No. 686,928, granted Nov. 19,1901, on an applicationgfiledv in the naine ofPerley R.

Glass. .This is, however, merely for purposes ofcillustration, and it should be understood thatthe invention is not limitedlto use in connection withl a machine oflthis type. Since many `of the details of the inachine fo'rm no'part of the present invention andare not'necessaryi for its understanding, they-havebeen omitted from-the drawings. For a showing of sucli parts of the machine reference may be had'to. said Letters Patent.v` y

The illustrated vmachine is provided with a frame casting-lO'carrying atV its forward enda stationaryV rod 12 and bearings` 14iii which is mounted for horizontal sliding l movement a rod-16. Attached to rod 16`and slidably mountedon rod'12 is ay head 18 provided with bearings 2()` in which is mounted; for vertical Isliding movement j a punch bar 22. Suitablemechanism may be,

provided, for example, as disclosed in said vLetters Patent No. 686,928, for moving the sliding head 18 horizontally. Similarly suitable mechjanism is provided for reciprocating punch' bar 22` vertically in timedv relationk tothe horizontal sliding movement of head 18. Thus punch bar 22 is moved downwardlyto cause a vcombined punch and set L26 carried at its lower end to punch a hole through a work piece 28 positioned upon a v work support which constitutes or is provided Vith a punch block. lhen the pressure of the combined punching and setting tool 26 is .slightly relieved by an appropriate upward movement of punch bar 22 and head 18 is slid to the left, as illustrated in Fig.^2, to feed the work to eyelet-inserting position. An eyelet is then picked from a raceway 32 by a spindle Sil troduced into the hole punched in the work.

' it this time. the work is clamped against movement by a presser foot Clin. As tool 36 moves upwardly, spindlel 3ft contacts with the lower end of thc combined punching and setting' tool 2o and reed bacl into the lower setting tool 3G against a sui ihle coinpression spring, the lower sct 36 forcing the eyelet up through the work and clenching it. against the clenching surface of the con1- .bined punching and sett-ing tool 26. After the eyclet has been clenched the punchbar 22 and tool 2G are moved upwardly away from the work support and then to the right, as viewed in Fig. 2, to complete the cycle of operation. 4

,To get rid of chips lO'punched from the work by the combined punching and setting tool 26, in accordance with the present invention, an ejector is housed within the punch bar 22 which is marie hollow for this purpose. Ejcctor is formed with a rigid collar 44: and projects upwardly, as shown at 16, through a plug 425 closing the upper end of the hollow punch lar 22 and normally held in position by a pin 50 projecting .through a J-shaped slot 52 in thc side of the punch bar 22. A compression spring 54 is housed within the hollow punch bar 22 bearing at its lower-end upon' an internal shoulder 56 formed on the punch bar and at its upper end against collar formed on ejector 4t2. A lighter spring 58 bears at its lower end against collar it and at its upper end against the lower end of plug 48, acting as a buffer and tending to prevciiit'unnecessary slapping and noise. Carried by sliding head i8 is a Vbracket ($0 having a horizontal portion 62 at its upper end carrying an adjustable stop screw (54 arranged inthe path of movement of the upper end of ejector 42 as thepunch and punch bar move upwardly after the cleiiching of each eyelet. During the punching and clenching operation ejector 4t2 is held retracted within the combined punching and setting tool 26 by spring 541:, 1out when punch bar 22 moves upwardly after the eyelet has been set, the upper end t6 of ejector 42 hits the lower end of stop 64e preventing further upward movement of the ejector, thereby compressing spring all and forcing the chips from the punching and setting tool 26 as 'the latter continues its upward movement with punch har 22. Thus the chips are ejected after the of a lower set-k ting tool 36 and is moved upwardly and inrecetas setting of each eyelet and before the setting tool is returned for the next punching operation.

Having described the invention, what l claim as new and desired to secure by Letters Patent of the United 'St-atei; is:

l. A fastener-inserting machine having a. combined punching and ytast-enersetting tool, means for introducing a fastener into a hole punched in the work by said tool cooperating with the tool `to clench the fastener in the work, an ejector within the said tool, means tending to retract the ejector, and nieans for causing the ejector to eject fromX the` tool chips punched from the work.

2. A fastener-inserting machine having a ,combined punching and fastenerlsetting tool, .means for introducing a fastener into a hole puncl'ied in the work by said tool cooperating with the tool to clench the fastener inthe work, an ejector within the setting tool, a spring` tending to retract the ejector, and means for causing the ejector to eject from the tool chips punched from the work. l t

3; A fastener-inserting machine having a. combined punching andl fastener-setting tool, means for introducing a fastener into a hole punched in the work by said tool cooperating .with theY tool to clench the fastener in the work, an ejector Within the setting tool, a spring tending to retract the ejector, and means for moving the ejector lengthwise of the tool after theclenching of veach fastener to eject from the tool chips punched from the Work.

4f. A tastener-mserting machine having a. combined punching and fastener-setting tool arranged to be moved intoengagement -with the work to punch a fastener-ieceiving hole therein Vand then to be moved transversely to feed the work to fastener-insert ing position, means for introducing a fastener into the hole punched in the rwork ar ranged to force the .fastener against the clenchino surface of thefsetting tool thereby clenching the fastener in the work, an

ejector within the setting tool, a spring tending to retract the ejector, and means for moving the ejector lengthwise of the setting tool after the clenching of each fastener to veject'from the tool chips punched from the work. Y

5. A fastener-inserting machine having a combined punching and fastener-setting tool arranged to punch a fastener-receiving hole in the work and then to be moved transversely to feed the work to fastener-insert? ing position, means for introducing a fastener into the hole punched in the work co-operating with the setting tool to clench the fastener in the work, an ejector passing through the setting tool, a spring tending to retract the ejector, means for moving the tool and the ejector away from the work after the clenching of each fastener, and. a

stop in the path of movement of the end of the ejector remote from the work arranged to be struck by the ejector, therebyejectmg from the tool chips punched from the work.

6. A fastener-inserting machine havin a punch bar, a combined punching and astener-setting tool carriedthereby vand arranged to be moved into engagement with the work to punch a fastener-receiving hole therein, means for introducing a fastener into the'hole punched in the work co-oper ating with the setting tool to clench the fastener in the work, an ejector` housed within the punch bar and passing lengthwise through said bar and said tool, a spring tending to retract t-he ejector, and means for moving the ejector lengthwise of the tool to eject from the tool chips punched from the work.

7. A fastener-inserting machine having a combined punching and sett-ing tool arranged to be moved into engagement with the Work to punch a fastener-receiving hole therein and after the insertion of a fastener in the hole Vto be withdrawn from the work, an ejector positioned within said tool and having a portion extending away from the work, a spring tending to move the ejector away trom the work, and a stop positioned therein and after the insertion of a fas-1 i tener in the hole to be withdrawn from the,y

work, an .ejector extending through said tool and punch bar and having a Vportion projecting from the punch bar, a spring housed within theV `punch bar tending to move the ejector away from the work, and

Va stop positioned in the path of movement of the end of kthe ejector which projects from the punch bar arranged when struck by the ejector duringvthe movement ofthe tool away from the lwork to vforce the lother i end of the ejector outwardlyl through the tool to eject from the tool chips punched t from the Work.

In testimony whereof I have signed my name to this specification.

HUGH R. HAMILTON. 

